AgentIndex icon
AgentIndex
authprobe logo
authprobe
★ 16
vs
plumb-mcp logo
plumb-mcp
★ 83

authprobe vs plumb-mcp

authprobe: `authprobe` is a diagnostic tool designed to pinpoint and troubleshoot failures in the Model Context Protocol (MCP) OAuth authentication flows. It scans the discovery process, identifies divergences from specifications, and provides detailed reports including RFC-based explanations and network traces to help resolve compliance issues.; plumb-mcp: Plumb is a Figma-to-code MCP server with a built-in verification loop. It reads Figma via a desktop plugin (no rate limits, works on Free plans) and outputs a compact normalised design spec (PDS) instead of large JSON tokens. The unique verification tool drives headless Chrome to diff the rendered code against the original design, closing the loop on code quality.

01

TL;DR

authprobe logo
authprobeVision / Multimodal · ★ 16

Validating OAuth discovery and protected-resource metadata behavior for MCP server authors.

Read authprobe full review →
plumb-mcp logo
plumb-mcpVision / Multimodal · ★ 83

Coding agents (Claude Code, Cursor, Windsurf) generating UI from Figma designs with verification to ensure pixel-perfect implementation.

Read plumb-mcp full review →
02

Side-by-Side Comparison

Field
authprobe logoauthprobe
plumb-mcp logoplumb-mcp
Category
Vision / Multimodal
Vision / Multimodal
Stars
★ 16
★ 83
License
Apache-2.0
MIT
Install Command
curl -fsSL https://raw.githubusercontent.com/authprobe/authprobe/main/scripts/install.sh | sh
npm install -g plumb-mcp && plumb-mcp init
Updated
5mo ago
1w ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
OAuth Diagnostics, MCP Protocol, API Security Testing
ai, ai-coding-agent, anthropic
03

Features

authprobe logoauthprobe
01Pinpoints MCP OAuth failures by walking the discovery flow and reporting divergences from spec.
02Provides a "funnel view" output to visualize where issues broke in the authentication chain.
03Offers RFC-based explanations and detailed network traces for failed probe steps.
04Supports LLM-powered explanations of RFC compliance gaps, with options for OpenAI or Anthropic.
05Generates comprehensive outputs like Markdown, JSON reports, and sanitized evidence bundles for troubleshooting.
plumb-mcp logoplumb-mcp
01No rate limits: reads Figma via a plugin API, bypassing REST quotas and plan gates.
02Compact spec (PDS): deduplicates design tokens and resolves auto-layout to flexbox, reducing token count by 1–2 orders of magnitude.
03Verification loop: `plumb_verify` MCP tool and CLI diff rendered code against Figma design, outputting structured deltas.
04Twelve MCP tools: outline, node, tokens, assets, screenshot, verify, search, components, and more.
05Two data paths: plugin (no token, real-time) and REST (headless/CI, requires token).
04

Use Cases

authprobe logoauthprobe
↳Validating OAuth discovery and protected-resource metadata behavior for MCP server authors.
↳Debugging where auth flows diverge from RFC 9728 / RFC 8414 for MCP client implementers.
↳Triaging auth regressions in CI before rollout for platform, security, and infra teams.
↳Generating reproducible evidence bundles for handoff across organizational boundaries for API teams.
↳Setting up recurring protection and regression tripwires in CI/CD pipelines (e.g., GitHub Actions).
plumb-mcp logoplumb-mcp
↳Coding agents (Claude Code, Cursor, Windsurf) generating UI from Figma designs with verification to ensure pixel-perfect implementation.
↳CI/CD pipelines that automatically verify frontend code matches design specs using the `plumb-mcp verify` CLI.
↳Developers needing to extract structured design tokens, SVG icons, and PNG assets from Figma without rate limits or plan restrictions.
FAQ

FAQ

What is the difference between authprobe and plumb-mcp?
Both authprobe and plumb-mcp are in the Vision / Multimodal category. authprobe has 16 stars, while plumb-mcp has 83 stars.
Which is better, authprobe or plumb-mcp?
The best choice depends on your use case. Choose authprobe if Validating OAuth discovery and protected-resource metadata behavior for MCP server authors., and plumb-mcp if Coding agents (Claude Code, Cursor, Windsurf) generating UI from Figma designs with verification to ensure pixel-perfect implementation..
Is authprobe free or open source?
Yes, authprobe is open source on GitHub (Apache-2.0).
Is plumb-mcp free or open source?
Yes, plumb-mcp is open source on GitHub (MIT).
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